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WO2006010267A1 - Systeme de distribution d'energie centralise et procede associe - Google Patents

Systeme de distribution d'energie centralise et procede associe Download PDF

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Publication number
WO2006010267A1
WO2006010267A1 PCT/CA2005/001185 CA2005001185W WO2006010267A1 WO 2006010267 A1 WO2006010267 A1 WO 2006010267A1 CA 2005001185 W CA2005001185 W CA 2005001185W WO 2006010267 A1 WO2006010267 A1 WO 2006010267A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
power
power supply
network
regulating means
Prior art date
Application number
PCT/CA2005/001185
Other languages
English (en)
Inventor
Michael Becigneul
Shawn Flynn
R. Glen Rockett
Original Assignee
Atlantic Cable Maintenance
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlantic Cable Maintenance filed Critical Atlantic Cable Maintenance
Priority to AU2005266806A priority Critical patent/AU2005266806A1/en
Priority to EP20050772097 priority patent/EP1779542A1/fr
Priority to CA002550019A priority patent/CA2550019C/fr
Priority to US11/658,410 priority patent/US20090015065A1/en
Publication of WO2006010267A1 publication Critical patent/WO2006010267A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers

Definitions

  • the present invention relates to a system and method for delivering controlled electrical power, and more specifically to a system and method for providing a continuous, reliable and inexpensive supply of utility and emergency power to a cable network for use by a plurality of active components in the network.
  • CATV cable television
  • AC network power supply typically the standard ferroresonant regulating transformer since it provides both voltage regulation and high isolation of the cable plant from the utility grid. Switchmode network power supplies may also be used.
  • Each network powering system has its own respective advantages.
  • single transformer network power supplies are mounted along the cable run at the pole or on the ground. Power is decreased to 110/220 volts of alternating current (VAC) at the public utility transformer and sent to the network power supply 10 located near the active components in the network. It passes through a disconnect switch 11 and into the network power supply 10 to further decrease the voltage to the 30, 63, 75 or 87 VAC specification required by the active components in the network. Next, it is routed by coaxial cable wire 12 into a nearby power inserter 13 where it is provided to the active components in the network. A bank of battery cells 14 at the network power supply provides emergency power on a temporary basis when the power is interrupted.
  • Figure 1 illustrates the configuration of equipment at a typical distributed powering system location.
  • Figure 2 illustrates the distribution of several network power supplies within a wider conventional distributed powering network system.
  • the layout of power segments is nonetheless constrained by some limiting considerations.
  • the layout design must compensate forthe voltage drop resulting from the natural impedance of the coaxial cable.
  • the distributed powering system minimizes impedance losses by locating the network power supply and power inserter together, thereby minimizing the length of coaxial cable required to connect these units to the network.
  • the centralized powering system is the other standard network architecture configuration.
  • the network power supplies are installed away from the local poles at a central location 15 with the back-up generators and fuel.
  • Figure 2a illustrates the distribution of several network power supplies within the central powering system network.
  • FIG. 3 The configuration of equipment at a typical centralized powering system location is illustrated in Figure 3.
  • Power from the public utility enters the central location 15 and is distributed through an automatic transfer switch (ATS) 16 to the breaker panel 17 and to several centralized network power supplies 18 where the voltage is decreased to the appropriate 30, 63, 75 or 87 VAC specification.
  • the power is then distributed by coaxial cable 19 to the power inserter 20 at the local pole where it is provided to the active components in the network.
  • the network power supplies 18 at the central location 15 are provided with a battery bank which takes over the power load on a temporary basis in the event of a power outage.
  • the emergency power source 21 at the central location 15 then provides emergency power through the automatic transfer switch (ATS) 16 and into the breaker panel 17 and network power supply 18 in the usual manner.
  • ATS automatic transfer switch
  • the configuration of the centralized powering system improves the reliability of continuous power supply in the event of a power outage.
  • the installation of the battery bank, generators and fuel at one central site facilitates easy access and reduces security risk.
  • Another disadvantage is the weight and number of coaxial cables required in the traditional centralized power system.
  • one coaxial cable is run to each local satellite network power supply.
  • a corresponding number of coaxial cables are required. This creates installation difficulties and future concerns related to maintenance and repairs due to environmental factors such as ice loading.
  • a further disadvantage is the inability of the traditional centralized powering solution to function with cable networks configured to operate at 87 VAC.
  • the maximum output voltage of a network power supply is 87 VAC, this voltage will decrease before it enters the cable network due to the inherent voltage drop in the coaxial cable.
  • the output voltage received at the cable network is insufficient for proper operation of active components in the network because they are configured to operate at 87 VAC.
  • United States Patent No. 5,677,974 to Elms et al. discloses a network and method of distributing power and optical signals that includes installing a hybrid communications and power cable between a source location and another relatively remote location.
  • the network for distributing power and optical signals to the remote location includes a centrally located alternating current power supply; a hybrid cable for providing optical signals and for transmitting power from the centrally located power supply to the remote location; a terminal located at the remote location for isolating the power from the optical signals; and a power supply in communication with the terminal, for receiving the power transmitted by the hybrid cable for use in powering active components in the network.
  • a system for providing power from a utility power source to remote active components in a cable network the active components requiring a predetermined voltage for their operation.
  • the system comprises a first voltage regulating means having an input side connected to the power source and an output voltage side connected to a second voltage regulating means disposed proximate to said active components in said network.
  • the first voltage means is capable of regulating a source voltage to an intermediate voltage.
  • the second voltage regulating means has an input side for receiving power at the intermediate voltage from the first voltage regulating means and an output side connected to the active components in the network.
  • the output side of the second voltage regulating means supplies the predetermined voltage for operation of the active components in the network.
  • At least one dedicated cable for connecting the first voltage regulating means to the second voltage regulating means is provided.
  • the first voltage regulating means is typically housed in a centralized location relative to a number of active components in a network.
  • the first voltage regulating means will also commonly comprise an incoming alternating current power supply, an alternating current power generator, an automatic transfer switch, at least one uninterrupted power supply means, a transformer, and a power distribution panel configured for regulating the source voltage to an intermediate voltage.
  • the output of the first voltage regulating means is preferably a regulated three-phase alternating current power supply.
  • the output voltage may be advantageously maintained within local regulations, for example, at 300 VAC in Canada.
  • the dedicated cable for transmission of electrical power is a damage-resistant cable, e.g. a protected cable.
  • the dedicated cable for transmission of electrical power is adapted for the distribution of regulated three-phase 300 VAC power supply.
  • the dedicated cable may be an armored cable comprising 4-conductor aluminum, #2 gauge wires with a rubberized outer jacket.
  • the second voltage regulating means generally comprises at least one rectifier, at least one inverter, and means for actively correcting the incoming power supply.
  • An output side of the second voltage regulating means may advantageously provide a single phase 110 VAC power supply, a single phase 220 VAC power supply, or both.
  • the output side may provide one or a combination of the following: 30, 63, 75, and 87 volts quasi square wave power supply.
  • the output side of may provide a combination of single phase alternating current power supply and quasi square wave power supply.
  • the location of the second voltage regulating means may be configured such that the intermediate voltage from the first voltage regulating means received at the input side of the second voltage regulating means is above a threshold voltage, for instance, the threshold voltage may be 170 VAC.
  • a method for providing power from a utility power source to one or more remote active components in a cable network comprising the steps of: regulating a source voltage to produce an intermediate-voltage power; distributing said intermediate-voltage powerto said remote active components in said network; and, actively correcting said intermediate-voltage power at a location proximate to said active components to a predetermined voltage for the operation of said active components in said network.
  • the intermediate voltage power is advantageously sent through a dedicated single and/or a multi-conductor damage resistant line.
  • Figure 1 is a schematic diagram showing the configuration of equipment at a typical conventional distributed powering system location.
  • Figure 2 is a schematic diagram showing the distribution of several power supplies within the wider distributed powering network system.
  • Figure 2a is a schematic diagram showing the distribution of several network power supplies within the central powering system network.
  • Figure 3 is a schematic diagram showing the configuration of equipment at a typical centralized powering system location.
  • Figure 4 is a schematic diagram showing the configuration of equipment at a new centralized powering system location according to an embodiment of the present invention.
  • Figure 5 is a schematic diagram showing the configuration of equipment at a new centralized powering system location according to another embodiment of the present invention.
  • the present invention relates to a centralized powering method which utilizes power distribution and transmission equipment configured to provide a continuous and reliable power to a cable network.
  • the centralized powering method utilizes a equipment configuration at the central location 15 so as to provide a continuous and reliable power to a cable network.
  • the first voltage regulating means 100 comprises a transformer 22 such as an AC to AC converter which is installed immediately after the automatic transfer switch 16 and prior to the breaker panel or a power distribution panel 17.
  • Power at a voltage of V1 VAC from a utility power source flows through the automatic transfer switch 16 and into the transformer 22.
  • the output of the transformer 22 is typically a regulated three-phase alternating current power supply at an intermediate voltage of V2 VAC.
  • the regulated three-phase alternating current power supply is then distributed to a cable network via the breaker panel 17 by means of a dedicated cable 23 in order to power remote active components (not shown here) in a cable network.
  • an input side of the second voltage regulating means 27 receives a regulated three-phase alternating current power supply at a voltage of V4 VAC.
  • An output side of the second voltage regulating means 27 provides a predetermined voltage sufficient for the operation of the active components in the network.
  • the voltage V4 VAC received at the input side of the second voltage regulating means 27 may be different from the intermediate voltage V2 VAC at the output side of the first voltage regulating means 100 due to several factors such as, transmission loss, network load, etc.
  • the location of the second voltage regulating means 27 may be strategically positioned such that the intermediate voltage V4 from the first voltage regulating means 100 received at the input side of the second voltage regulating means 27 is above a threshold voltage.
  • the automatic transfer switch 16 automatically supplies power to the transformer 22 from the back-up generator 21 until normalcy is restored.
  • the back-up generator 21 may supply power at a voltage of V3 VAC.
  • the transformer 22 will force the output to a regulated three-phase alternating current power supply at an intermediate voltage of V2 VAC prior to distribution.
  • 110/220 VAC power from a utility power source flows through the automatic transfer switch 16 in a typical manner, then enters the transformer 22 where it is regulated to 87 VAC.
  • the regulated power is then distributed through the breaker panel 17 into a dedicated cable 23 such as a protected cable, and routed away from the central location 15 to the remote network power supplies 10 at the poles.
  • the current drawn through the cable is limited by ensuring that the input voltage at the remote location always exceeds a threshold voltage, for example, 50 VAC.
  • the protected cable 23 comprises three conductor wires and one common neutral wire, enabling the power to be further distributed into three smaller cables 24, 25, and 26 which service individual remote power supplies 10.
  • the regulated 87 VAC power is actively corrected and is increased to 110/220 VAC by the second voltage regulating means 27.
  • the increased voltage is then routed in the usual manner through the disconnect switch 11 and into the network power supply 10 and power inserter 13, 20 as described in Figures 1 and 3.
  • the first voltage regulating means 100 further comprises one or more uninterrupted power supplies (UPS) 28 disposed between the automatic transfer switch 16 and the transformer 22.
  • UPS uninterrupted power supplies
  • the UPS 28 provides the power supply to the transformer 22 until such time as the output of the back-up generator 21 has stabilized.
  • the output V2 of the first voltage regulating means 100 may be advantageously maintained within local regulations, for example, at 300 VAC in Canada.
  • the second voltage regulating means 27 may be positioned such that the intermediate voltage V4 from the first voltage regulating means 100 received at the input side of the second voltage regulating means 27 is above a threshold voltage, for instance, the threshold voltage may be 170 VAC.
  • the second voltage regulating means 27 generally comprises at least one rectifier, at least one inverter, and means for actively correcting the incoming power supply.
  • the components of the second voltage regulating means 27 are commercially available and may be configured using common methods known in the art.
  • the output side of the second voltage regulating means 27 may advantageously provide a single phase 110 VAC power supply, a single phase 220 VAC power supply, or both.
  • the output side may provide one or a combination of the following: 30, 63, 75, and 87 volts quasi square wave power supply.
  • the output side may provide a combination of single phase alternating current power supply and quasi square wave power supply.
  • Implementation of the present invention allows the amount of equipment installed at the central location 15 to be minimized.
  • Site requirements may be limited to the first voltage regulating means 100 comprising the generator 21 , the ATS 16, the transformer 22 and the breaker panel 17.
  • One or more uninterrupted power supplies 28 may preferably be included in the first voltage regulating means 100.
  • the disconnect switch 11 , network power supply 10 and battery bank 14 may remain at the local pole as illustrated in detail in Figure 1 and more generally in Figure 2. As a result, the land use requirement at each central location 15 is reduced.
  • the distributed powering system equipment and configuration at the local pole locations can also be quickly and readily utilized with minor modifications.
  • the existing disconnect switch 11 , power supply 10, coaxial cable 12, power inserter 13, and battery banks 14 can be used without modification because the voltage of alternating current is regulated to 110/220 VAC by the second voltage regulating means 27.
  • Standard 30, 63, 75 or 87 VAC power is then produced and supplied to the power inserter 13 in the typical manner as described previously.
  • Cable materials and installation labor expenses can also be reduced by as much as sixty-seven percent (67%).
  • the coaxial cable 19 typically used in the centralized powering system shown in Figure 3 is replaced with conductors in dedicated cable 23, as illustrated in Figure 4. Since the conductors are further separated and routed to three separate local network power supplies 10, the length of the cable is reduced. The number of central locations 15 required to feed the local network power supplies 10 is also decreased.
  • the present invention enables the reliability of uninterrupted power to be improved with several design considerations.
  • the risk of line failure is reduced by the use of strengthened dedicated cable 23 to distribute power out from the central location 15.
  • equipment usage is optimized by locating the generator 21 off-site at the secure central location 15 and placing the battery banks 14 at the pole. This ensures timely access to battery power by the active components in the network. It also minimizes the length of transmission wire required between the battery and the active components, thereby reducing the risk of line failure in this final portion of the network power supply route.
  • the conventional power distribution methods typically require manual adjustment or configuration to the power supply. Consequently, the input side of the power supplies in conventional systems must be manually reconfigured when there are significant (but not necessarily large) changes to either the power distribution network or to the cable network. For example, extension of the power distribution network may change the received voltages at other points (remote locations) in the power distribution network. The changes may also affect the received voltage at the remote locations.
  • the system and method according to the present invention actively corrects forthese circumstances and the supply of regulated three-phase power provides for an inherently balanced power distribution network.
  • Advantages of the present invention include increased reliability of network power supply for cable users who rely on the utility power grid for the amplifier signal and the cable power network for the RF signal. Benefits derived from the use of the present invention can also be enjoyed in a wide range of fields, including electrically powered security cameras and traffic lights.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

L'invention concerne un système et un procédé destinés à la distribution d'énergie électrique et, plus précisément, un système et un procédé permettant de fournir une quantité d'énergie utilitaire et de secours continue, fiable et économique, à un réseau de câbles, pour qu'elle soit utilisée par une pluralité de composants actifs du réseau. Le système comprend un premier régulateur de tension (100) comportant une entrée reliée à la source d'énergie et une sortie reliée à un second régulateur de tension (27) situé à proximité desdits composants actifs dudit réseau. Le premier régulateur de tension (100) est capable de réguler une tension source de manière à fournir une tension intermédiaire. Le second régulateur de tension (27) comporte une entrée destinée à recevoir l'énergie à la tension intermédiaire, transmise par le premier régulateur de tension (100), ainsi qu'une sortie reliée aux composants actifs du réseau. La sortie du second régulateur de tension (27) fournit la tension prédéterminée pour faire fonctionner les composants actifs du réseau. Le système comprend également au moins un câble spécialisé (23) permettant de relier le premier régulateur de tension (100) au second régulateur de tension (27).
PCT/CA2005/001185 2004-07-30 2005-07-29 Systeme de distribution d'energie centralise et procede associe WO2006010267A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2005266806A AU2005266806A1 (en) 2004-07-30 2005-07-29 Centralized powering system and method
EP20050772097 EP1779542A1 (fr) 2004-07-30 2005-07-29 Systeme de distribution d'energie centralise et procede associe
CA002550019A CA2550019C (fr) 2004-07-30 2005-07-29 Systeme de distribution d'energie centralise et procede associe
US11/658,410 US20090015065A1 (en) 2004-07-30 2005-07-29 Centralized powering system and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,476,331 2004-07-30
CA002476331A CA2476331A1 (fr) 2004-07-30 2004-07-30 Nouvelle methode d'alimentation centralisee

Publications (1)

Publication Number Publication Date
WO2006010267A1 true WO2006010267A1 (fr) 2006-02-02

Family

ID=35767534

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2005/001185 WO2006010267A1 (fr) 2004-07-30 2005-07-29 Systeme de distribution d'energie centralise et procede associe

Country Status (5)

Country Link
US (1) US20090015065A1 (fr)
EP (1) EP1779542A1 (fr)
AU (1) AU2005266806A1 (fr)
CA (1) CA2476331A1 (fr)
WO (1) WO2006010267A1 (fr)

Cited By (5)

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US7910134B2 (en) 2007-10-29 2011-03-22 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof
US8431141B2 (en) 2007-10-29 2013-04-30 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof
US8475815B2 (en) 2007-10-29 2013-07-02 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof
US8709395B2 (en) 2007-10-29 2014-04-29 Ayman Boutros Method for repairing or replacing damaged tissue
US8815228B2 (en) 2010-04-30 2014-08-26 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof

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US9673661B2 (en) 2013-10-24 2017-06-06 Kohler, Co. Transfer switch with monitor on load side
CN109546685B (zh) * 2018-12-26 2022-06-14 武汉大学 一种分布式电源分组合作的配电网分布式优化控制方法
CN110854994A (zh) * 2019-11-08 2020-02-28 中广核研究院有限公司 一种移动柴油发电机组快速接入装置及方法
CN114709871B (zh) * 2022-04-22 2023-11-28 珠海科创储能科技有限公司 一种具有并离网切换功能的储能系统
CN117955525A (zh) * 2022-10-19 2024-04-30 广州视源电子科技股份有限公司 一种通信电路和电器设备

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Publication number Priority date Publication date Assignee Title
US7910134B2 (en) 2007-10-29 2011-03-22 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof
US8431141B2 (en) 2007-10-29 2013-04-30 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof
US8475815B2 (en) 2007-10-29 2013-07-02 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof
US8709395B2 (en) 2007-10-29 2014-04-29 Ayman Boutros Method for repairing or replacing damaged tissue
US8956632B2 (en) 2007-10-29 2015-02-17 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof
US8962002B2 (en) 2007-10-29 2015-02-24 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof
US9295691B2 (en) 2007-10-29 2016-03-29 Ayman Boutros Method for repairing or replacing damaged tissue
US8815228B2 (en) 2010-04-30 2014-08-26 Ayman Boutros Alloplastic injectable dermal filler and methods of use thereof

Also Published As

Publication number Publication date
CA2476331A1 (fr) 2006-01-30
EP1779542A1 (fr) 2007-05-02
AU2005266806A1 (en) 2006-02-02
US20090015065A1 (en) 2009-01-15

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